How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/15100.0*Chance in playoffs100.0*Average seed
Penarol 2 The Strongest 0 -23.6
-0.2
Libertad 0 Atletico Tucuman 0 In
-0.1
Week of 5/22None
Points
Chance Will Make Playoffs